import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie

NProgress.configure({ showSpinner: false }) // NProgress Configuration

// permission judge function
function hasPermission(roles, permissionRoles) {
  if(permissionRoles != undefined)
  {
    return roles.some(role => permissionRoles.indexOf(role) >= 0)
  }else{
    return false
  }
}

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach((to, from, next) => {
  // console.log(to)
  NProgress.start() // start progress bar
  if (getToken()) {
    // if (true) {
    if (to.path === '/login') {
      next({ path: '/' })
      NProgress.done() // if current page is dashboard will not trigger	afterEach hook, so manually handle it
    } else {
      if (store.getters.roles.length === 0) {
        // 判断当前用户是否已拉取完user_info信息
        store
          .dispatch('GetUserInfo')
          .then(res => {
                if(!res.data.code){
                    // 拉去用户信息
                    const roles = ["admin"]
                    store.commit('SET_ROLES',roles)
                    store.dispatch('GenerateRoutes',{roles}).then(accessRoutes => {
                    // console.log(accessRoutes)
                    router.addRoutes(accessRoutes) // 动态添加可访问路由表
                    next({ ...to, replace: true })
                    })
                }else{
                    sessionStorage.clear()
                }
          })
          .catch(err => {
            store.dispatch('FedLogOut').then(() => {
              Message.error(err)
              next({ path: '/' })
            })
          })
      } 
      else {
        // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
        if(to.meta.roles == null)
        {
          next()
        }else if (hasPermission(store.getters.roles, to.meta.roles) === false) {
           next({ path: '/401', replace: true, query: { noGoBack: true }})
        }else{
           next()
        }
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // 在免登录白名单，直接进入
      next()
    } else {
      // next(`/login?redirect=${to.path}`) 
      next(`/login`) // 否则全部重定向到登录页
      NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
    }
  }
})

router.afterEach(() => {
  NProgress.done() // finish progress bar
})
